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M66238FP

STANDARD CLOCK GENERATOR WITH PLL FREQUENCY SYNTHESIZER

MITSUBISHI ELECTRIC  

MITMSITUSBUISBHISI H〈DI I〈GDIITGAITLAALSASSPS〉 P〉

M662M36682F38PFP

STASNTADNADRADRCDLOCLCOKCGKEGNEENREATROATROWRITWHITPHLLPLFLRFERQEUQEUNECNYCSYYSNYTNHTEHSEIZSEIRZER

DESCRIPTION

The M66238 is a LSI that incorporates a PLL synthesizer and

a sync clock generator in it. The PLL synthesizer covers the

range of 25MHz to 50MHz at the minimum steps of 3kHz.

The sync circuit outputs a clock and a one-shot pulse which

are synchronized with an external trigger signal. Setting a

dividing ratio allows acquisition of sync clock outputs within

the range of 0.78MHz to 25MHz.

FEATURES

• Sync clock output frequency range: 1/1, 1/2, 1/4, 1/8, 1/16,

1/32 of 25 to 50MHz

• Sync accuracy (jitter): ±3ns

• Trigger input: Polarity selectable

• One-shot pulse output: Polarity and width selectable

• 5V power supply

APPLICATION

Pixel clock generator

PIN CONFIGURATION (TOP VIEW)

DIGITAL GND PIN DGND 1

RESET INPUT RESET → 2

CHIP SELECT INPUT CS → 3

SERIAL DATA INPUT SIN → 4

SERIAL CLOCK INPUT SCLK → 5

CLOCK OUTPUT XOUT ← 6

CLOCK INPUT XIN → 7

DIGITAL GND PIN DGND 8

DIGITAL POWER

SUPPLY PIN

DVCC

9

 TCKI → 10

TEST

PIN 

TCKO

←

11

PLL OUTPUT CKO/PLLO ← 12

CLOCK OUTPUT CKOB ← 13

ONE-SHOT PULSE OUTPUT PULSE ← 14

SYNC OUTPUT POWER

SUPPLY PIN

VCCO

15

SYNC OUTPUT GND PIN GNDO 16

32 AGND ANALOG GND PIN

31

AVCC

ANALOG POWER

SUPPLY PIN

30 AGND ANALOG GND PIN

29 → RV VCO LOAD OUTPUT

28

AVCC

ANALOG POWER

SUPPLY PIN

27 AGND ANALOG GND PIN

26 ← CPIN FILTER CONNECT PIN

25 AGND ANALOG GND PIN

24 → CPOUT FILTER CONNECT PIN

23 DGND DIGITAL GND PIN

22

DVCC

DIGITAL POWER

SUPPLY PIN

21 → UP 

 TEST PIN

20 → DOWN 

19

DVCC

DIGITAL POWER

SUPPLY PIN

18 DGND DIGITAL GND PIN

17 ← TR TRIGGER INPUT

Outline 32P2W-A

BLOCK DIAGRAM

CHIP SELECT INPUT CS 3

SERIAL DATA INPUT SIN 4

SERIAL CLOCK INPUT SCLK 5

CLOCK INPUT XIN 7

CLOCK OUTPUT XOUT 6

RESET INPUT RESET 2

TRIGGER INPUT TR 17

SERIAL

WRITE

CONTROL

CIRCUIT

CRYSTAL

OSCILLATOR

CIRCUIT

fin

12-BIT

DIVIDER

COMMAND

REGISTER

COMMAND CONTROL

CIRCUIT

15

12

15-BIT COUNTER

PHASE

COMPARATOR

VCO

fvco

25MHz ~ 50MHz

CHARGE

PUMP

10 TCKI

11 TCKO

TEST PIN

SYNC/DIVIDER

CIRCUIT

( ) SYNC CLOCK

GENERATOR

12 CKO/PLLO PLL OUTPUT

13 CKOB CLOCK OUTPUT

14 PULSE ONE-SHOT PULSE OUTPUT

21

20

24

UP DOWN CPOUT

26

29

CPIN RV

TEST PIN

FILTER CONNECT PIN

FILTER CONNECT PIN VCO LOAD OUTPUT

1

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